the momentum is now with romney and ryan. the only way to block that momentum barring an obtain surprise may be for the president to decisively win tuesday's debate. >> i think he's going to be aggressive in making the case for his view of whether we should go as a country, and a country that is built around a growing, thriving middle class not this top down theory that governor romney has. >> there is one potentially very big obstacle to achieving that, however, this next debate is a town hall style debate with undecided voters picked by the gallop polls asking the questions with the moderator asking the follow-up. they tend to lean towards social issues, because citizen questioners often relate their personal antidotes or circumstances. to be aggressive in such a form can be off putting to some voters. candidates have to walk that fine line between being aggressive and being compassionate. martha: very true, doug. the citizen questioners are allowed to pose domestic questions or foreign policy questions, it's a mix. >> repo